27872438 has 8 divisors (see below), whose sum is σ = 45609480. Its totient is φ = 12669280.

The previous prime is 27872437. The next prime is 27872447. The reversal of 27872438 is 83427872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27872395 and 27872404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27872431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633443 + ... + 633486.

It is an arithmetic number, because the mean of its divisors is an integer number (5701185).

Almost surely, 2^27872438 is an apocalyptic number.

27872438 is a deficient number, since it is larger than the sum of its proper divisors (17737042).

27872438 is a wasteful number, since it uses less digits than its factorization.

27872438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266942.

The product of its digits is 150528, while the sum is 41.

The square root of 27872438 is about 5279.4353864784. The cubic root of 27872438 is about 303.1970601771.

It can be divided in two parts, 2787 and 2438, that added together give a palindrome (5225).

The spelling of 27872438 in words is "twenty-seven million, eight hundred seventy-two thousand, four hundred thirty-eight".